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HSChapter 84
U.S. exports of check valves (HS 848130) totaled $58.6M in July 2026.
Importers of Check Valves paid $7.0M in duties in July 2026 — an effective duty rate of 18% on $39.4M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataCheck valves — one-way flow devices that prevent backflow in piping systems — are classified in the US schedule primarily by body material: copper at two pressure-rating thresholds (8481301010 and 8481301090), iron (8481302010), steel (8481302090), and all other materials (8481309000). This material-based structure means that a functionally identical valve can fall into different tariff lines depending solely on its body composition, making metallurgical documentation a routine compliance requirement. China is the leading US import source for this heading, followed by Mexico and Canada. Importers sourcing from China should assess Section 301 tariff exposure at the applicable 10-digit line level.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
4.1K shipments/mo
The US schedule splits copper check valves at a rated working pressure of 850 kPa: valves rated below that threshold fall under 8481301010, while those rated at or above 850 kPa fall under 8481301090. The pressure rating on the manufacturer's specification sheet or stamped on the valve body is the controlling evidence, and importers should retain that documentation in their entry records.
Classification is based on the material of the valve body (the principal structural component), not the internal trim or seats. A valve with a steel body and copper internals would be classified under the steel check valve line (8481302090). When body material is ambiguous from the invoice description alone, a material certification or mill test report from the manufacturer should be obtained to support the classification.
Subheading 4 of 6 in heading 8481
Subheading 848130 · $47.4M of $1.7B
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ImportsExports
Imports
$47.4MYoY · Pro
Exports
$58.6MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8481302090 | Check Valves of Steel | $16.2M | 16.45% | 88.93% | $2.7M |
| 8481309000 | Check Valves Except Copper, Iron or Steel | $15.7M | 10.66% | 77.46% | $1.7M |
| 8481301090 | Check Valves,Copper, W Pressure Rate 850 Kpa or Ov | $8.5M | 16.57% | 91.65% | $1.4M |
| 8481302010 | Check Valves of Iron | $5.7M | 18.47% | 65.97% | $1.0M |
| 8481301010 | Check Valves,Copper, W Pressure Rating Un 850 Kpa | $1.4M | 17.79% | 95.01% | $250K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · July 2026
destination
customs district
origin
entry
rate provision · imports
16.8% enters free of duty; the effective duty rate is 14.84%.